How can I append a script field to a result? - elasticsearch

Question

I want to append a script field to a elasticsearch result. But I can't find a working solution.
I have a script field like this:
{
"script_fields": {
"distance": {
"script": "doc[my_field_name].arcDistance(my_lat, my_lon)",
"params": {
"my_field_name": "geopoint",
"my_lat": 52.5,
"my_lon": 13.4
}
}
}
}
As result I get something like that:
"hits": [
{
"fields": {
"distance": [
0
]
}
},
{
"fields": {
"distance": [
500
]
}
},
{
"fields": {
"distance": [
1000
]
}
}
]
But I need full documents together with the script fields. So I've tried this:
{
"script_fields": {
"distance": {
"script": "doc[my_field_name].arcDistance(my_lat, my_lon)",
"params": {
"my_field_name": "geopoint",
"my_lat": 52.5,
"my_lon": 13.4
}
},
"source": {
"script": "_source"
}
}
}
But as result I get something like this:
"hits": [
{
"fields": {
"distance": [
0
],
"source": [
{
"id": "101",
"geopoint": {
"lon": 52.5,
"lat": 13.4
},
}
]
}
},
{
"fields": {
"distance": [
500
],
"source": [
{
"id": "101",
"geopoint": {
"lon": 52.5,
"lat": 13.4
},
}
]
}
},
{
"fields": {
"distance": [
1000
],
"source": [
{
"id": "101",
"geopoint": {
"lon": 52.5,
"lat": 13.4
},
}
]
}
}
]
The source is in this case the same for all hits. I have thought the _source loads per document, but doesn't look so.
How can I achieve script field together with the document as result or isn't this possible?

Answer 1

I was on the wrong track. The solutions was to change the request to:
{
"fields": [
"_source"
],
"script_fields": {
"distance": {
"script": "doc[my_field_name].arcDistance(my_lat, my_lon)",
"params": {
"my_field_name": "geopoint",
"my_lat": 52.5,
"my_lon": 13.4
}
}
}
}
the result looks than something like this:
"hits": [
{
"fields": {
"distance": [
0
],
},
"_source": {
{
"id": "101",
"geopoint": {
"lat": 52.5,
"lon": 13.4
},
}
}
},
{
"fields": {
"distance": [
500
],
},
"_source": {
{
"id": "102",
"geopoint": {
"lat": 52.5,
"lon": 13.40739378
},
}
}
},
{
"fields": {
"distance": [
1000
],
},
"_source": {
{
"id": "103",
"geopoint": {
"lat": 52.5,
"lon": 13.4147875
},
}
}
}
]